Removable core air diffusers



C. N. ODAY REMOVABLE CORE AIR DIFFUSERS April 4, 1961 4 Sheets-Sheet 1Filed Sept. 21, 1953 INVENTOR ATTORNEY April 1961 c. N. ODAY 2,977,869

REMOVABLE CORE AIR DIFFUSERS Fil'ed Sept. 21, 1955 r ia. x

4 Sheets-Sheet 2 INVENTOR ATTORNEY April 4, 1961 C.'N. O'DAY 2,977,869

REMOVABLE CORE AIR DIFFUSERS Filed Sept. 21, 1953 4 Sheets $heet 5INVENTOR (b if 72d #92 ATTORNEY April 4, 1961 c. N. ODAY 2,977,869REMOVABLE CORE AIR DIFFUSERS Filed Sept. 21, 1953 4 Sheets-Sheet 4INVENTOR system.

United States Patent Cortland N. ODay, Port Washington, N.Y.'

(% Air Devices, Inc., 17 E. 42nd St., New York, NY.)

Filed Sept. 21, 1953, Ser. No. 381,235 1 Claim. c1. 9s--40 The presentinvention relates to removable core air diffusers and it particularlyrelates to a device in which the core of a diffuser may be readilyreplacedso as to give a desired directional distribution of the flow ofair.

In the installation of air distribution or air conditioningsystems,normally for eachnumber of square feet of ceiling or for each desiredceiling space, an air outlet is provided to assure uniform or desireddistribution for ventilating or air conditioning purposes. 7 It,however, has been found that with varying location and positioning ofwalls and partitions, this frequently results in an undesireddistribution of the air, with the result that air frequently will beblown in large quantity provide an air diffusion outlet which may bereadily adjusted with a-minimum of labor and without reconstruction ofeither the ceiling or the air conditioning or ventilating system,andwhich at the same time will permit a desired distribution ofthe airstream passing into the 7 room.

A further object is to provide a novel air diffusing outlet which. maybe readily adjusted, modified or altered, to

give one, two, three or four-way distribution or flow of air to achievea desired ventilation .or distribution of air direction unit thereof tobe removed, replaced, ad-

.justed or otherwise serviced without ceilingreconstruction and byrelatively simple manipulation of a building attendant. t i

7 Still further objects and advantages will appear in the more detaileddescription set forth'below, it being understood, however, that thismore detailed description is given by way :of illustration andexplanation only and not-bywayof limitation, since various changestherein may be made by those skilled in the art without depart- 1 ingfrom the scope and spirit of the present invention.

According to the preferred embodiment of thepresent invention, the ductcollars are permanently mounted either by recessing in the ceiling or bymountingupon the ceiling and depending'therefrom. Theseduct' collars aredesirablyassociated withan internal air distribution The duct collarsare desirably of rectangular orsquare cross section, although: theymayalso be ofother types of "cross section and even maybe circular.

I'Ihcse duct collarsare-pe'rmanently connected-Itothe internal airconduit system within and above the ceiling line, and they are providedwith outlets either mounted directly in recesses of the ceiling ordepending from the ceiling line, as may be desired.

The removable core then may be placed in or readily removed from theoutlet of the duct collar.

Preferably the duct collar is provided with an outwardly beveled. ordivergent mouth, and the removable core is provided with a conformingfrustro-pyramidal or frustro-conical conforming structure, and the twowill be held together either by readily removable mounting locks orhinge connections of a type which will permit ready insertion of a coreor a multiple of cores in position by a single tool, such as a screwdriver, without difiiculty in matching connections on the part of theservice man or building attendant who is to make a suitable adjustmentof the core structure. 7

The cores aredesirably of square or rectangular shape to match the ductoutlet in shape and size and they have diffusion or diffusion in anynumber of directions as may be desired to obtain proper distribution ofair into the interior space within the room.

duct collars have been positioned in a modular basis with one providedfor every so many square feet of ceiling space.

Although the present invention is particularly-designed for ceiling, italso has further application to wall diffusers to give a desired up,down and side'distribution of air.

With the foregoing and other objects in view, the invention consists ofthe novel construction, combination and arrangement of parts ashereinafter more specifically described, and illustrated in theaccompanying drawings, wherein is shown an embodiment of the invention,.but it is to be understood that changes, variations and modifica tionscan be resorted to which fall within the scope of the claim hereuntoappended.

In the drawings wherein like reference characters denote correspondingparts throughout the several views; Fig. 1 is a bottom perspective viewof one form of duct outlet or air outlet with the core removed accordingtothe present invention. Fig. 2'isa bottom perspective view similar toFig. 1,

showing the method of inserting the removable core into the mouth of theduct outlet of Fig. 1.

I Fig. 3 is a bottom perspective view similar to Figs. 1

and 2, showing the removable core in. position in the duct outlet. I

Fig. 4 is a transverse sectional view upon the line 4- -4 of Fig. 1,with the core in position in the duct outlet but in inverted position. 1,1.

Fig. 5 is a fragmentary plan view upon the line S--5 gt Fig. 4 and uponan. enlarged scale as compared to ig. 4.'-

Fig. 6;.is a transverse sectional view of an alternative form of ductoutlet, with a removable core in position therein.

Fig 7 is still another side sectional view of another form of ductoutlet with a removable'core in position therein. 1

. Fig- 8 is a side sectional view of a further'embodiment with aremovable core in 'positionjin' a frame with the frame being 'mountedflush with the ceilingorwall and received'in an openingin saidceiling'or wa'll.

Fig. 9 is a bottom perspective,viewshowingtheinsertion of a one-waycorein aduct outletof the type of Fig.

built-in diffusing vanes, giving one, two or three-way- Fig. 10 is abottom perspective view showingthe position of a three-way outlet in theduct outlet of Fig. 6.

Fig. 11 is a bottom perspective view showing a twovay core inserted inthe outlet of the typeas shown in Fig. 4.

' Referring to Figs. 1 to 5, there is shown a vertical duct which mayproject through or into a ceiling or wall and which is connected to aninternal duct system through which air is being distributed to theinterior space in a building, boat or other struction.

The duct A has an outlet B with a frustro-pyramidal section C. Theoutlet B has an outwardly extending flange D, which forms a seal againstthe ceiling line E. To be inserted within the pyramidal mouth or openingof the duct A is a removable core E, shown as having 'four-way diffusingvanes, which will distribute the air in at least four directions on eachside. The removable core E is shown as having a detachableslip hinge -F-at one side and a rotatable mounting lock G at'the othe'r side, but ifdesired all of the connections'm'ay be of the bayonet type G, or othertypes of readily attached connections may be utilized for holding theremovable core E in. position.

Referring particularly to Fig. l, the duct A'has the side walls 10,which are connected by means of the corner strips 11. The upper end ofthe duct A is connected to an internal conduit system not shown. The endof the walls 10 extend outwardly and obliquely, as indicated at 12, tothe flange D, which has an upturned or reversely turned peripheral edge13 for holding the annular or peripheral sealing gasket 14 against theceilin'gE.

In the form shown, at one 'side of the mouth C there are provided theslots 15 for receiving the hinge connections F of the removable core E.The other side of the mouth C is provided with an opening 16 to receivethe rotatable mounting lock G. The inside of the mouth C in back of theopening '16 has two parallel plates 17 and 18, which may be spot weldedto the mouth C. These plates have upturned portions 19 and 20, whichform a double convergent slot 21 and the camming edges 22 and 23 forcooperation with the rotatable mounting lock G. g

The removable core is best shown in Figs. 2, 3, 4 and 5. It consists ofan outside flange portion 35, which conforms in obliqueness and shape'tothe mouth C, and it also is provided with a series of rows of vanes 36,37 and 38 separated by the outwardly extending flanges 39, 40 and 41 togive the desired distribution of air.

The particular core E shown in Figs. 2 to is a fourway distributioncore, which will give a flow of air in four directions, but it may bereadily replaced by one, two, three or other diffusion cores giving adesired pattern of air distribution.

The upper portion of the removable co're'E has a projection-42 whichwill fit within the duct portion 16 and locate the core correctly inrespect to the mouth C. However, this projection 42 may be omitted sincethe hinges F and the rotatable mounting lock G will be sufficient tolocate and mount the removable core E in position.

As is best shown in Figs. 2, 4 and 5, the edges of the core are turnedinwardly, as indicated at '43, to give a finished edge and also toform-a bearing against the mouth C. I

At the same time there is provided an opening 44, with an outturned anddownturned lip 45 (see Fig. 4), which will form abearing surface for theconical side 46 of the fillister slotted head 47. The head 47 will bear1113011 1136 lip'45 as it is rotated. The hea'dhas a depending shank 48,with a cross pin 49 (see Fig. 4), which vwill bear upon the cam edges 22and 23-of the slot 21.

The rotatable 'locking member G will be held in position and will notfall out of position because the'head 47 and the pin 49 are larger thanthe opening 44. This is particularly convenient when the removable coreE -is inserted into the mouth C in the position, as indicated in Fig. 2,and it is not necessary for the maintenance man to carry the rotatablelocking members 48 separately.

Moreover, as the removable core is inserted in position, the obliquesides 19 and 20 of the slot 21 will automatically turn the rotatablemember G so that the cross pin 49 will pass through the slot 21, andthen by a 90 turn with a screw driver, the mounting lock may be appliedto permanently mount the removable core E in position, as indicated inFigs. 3, 4 and 5.

Before the connection by the rotatable locking member G,-however, in theform shown in Figs. 1 to 5, the detachable slide hinges F are insertedin position in the slots 15.

These slide hinges consist of the space plates 60, which may bespot-welded to the back face of the outside oblique flange 35 of thecore E. The end portions are extended outwardly, as indicated at 61, toproject through the slots 15 and engage the mouth C.

The slip hinge F may be omitted and a series of rotatable mounting locksG may be utilized around the periphery of the mouth C and the outsideflange 35 of the removable core E. For example, one or two, or evenmore, of said rotatable locks G may be used on'each side or changes onopposite sides to the exclusion of the slip hinges F.

It is apparent in the structure shown in Figs. 1 to 5 that the centralsection 41 of the removable core B may be readily grasped by a serviceman or mechanic standing on the ladder and the slip hinges F may beinserted in-the slots 15, and the rotatable mounting lock G willautomatically position itself in the slot 21, so that the pin 49 willextend through and be ready to be locked against the camming edges 22and 23.

Where a rotatable lock G is positioned on each side, it will not benecessary for the mechanic or service man 'to'insert the slip hinges Finto the slots 15. By this arrangement it is possible to readily change,renew or service the removable core E, and different types of refeed thevarious duct outlets A throughout the building structure or space.

The duct collar 75 may be provided with a damper 79, removably insertedthereinto, having a plurality of adjustable vanes 80 which may be set tocontrol the iceiling E, and the flange D has an upwardly extending sideportion 13', which is sealed to the ceiling by the rubber peripheralseal 14'. It will be noted that the diffuser. in Fig. 7 hangssubstantially below the ceiling line E'.

In the alternative device shown in Fig. 8, similarly functioning partsare indicated by the same letters'and numerals as in Figs. 1 to 5, withsimilar parts, however, being provided with a superior 2.

in this device the flange D around the side of the mouth C projectswithin the recess in the ceiling and above the ceiling line:strueture EThe rotatable mounting lock G and slip hinge F may be the same as shownin Figs. 1 to 5.

In the device shown in Fig. 9, similarly functioning parts are indicatedby the same letters and numerals as in Figs. 1 to 5, with similar parts,however, being provided with a superior 3.

In Fig. 9 is shown an outlet of the type shown in Fig. 8 but with aremovable core having a one-way air direction. This core is providedwith the oblique outside vanes 91, and the air is emitted in thedirection 92. A single rotatable mounting lock G may be provided at oneside of the arrangement.

In the device shown in Fig. 9, similarly functioning parts are indicatedby the same letters and numerals as in Figs. 1 to 5, with similar parts,however, being provided with a superior 4.

In Fig. an outlet of the type shown in Fig. 6 is provided with athree-way core, the three-way directional flow being indicated by thearrows 93.

In the device shown in Fig. 11, similarly functioning parts areindicated by the same letters and numerals as in Figs. 1 to 5, withsimilar parts, however, being provided with a superior 5.

In Fig. 11, there is a two-way removable core, with the oblique outsidevanes 94 in opposite directions, and with the air being distributed, asindicated by the arrows 95.

While there has been herein described a preferred form of the invention,it should be understood that the same may be altered in details and inrelative arrangement of parts within the scope of the appended claim.

Having now particularly described and ascertained the nature of theinvention, and in what manner the same is to be performed, what isclaimed is:

A removable and replaceable core ceiling air difiuser having a squareframe to contact and rest against the ceiling, said frame having asquare opening with an inwardly converging frustro pyramidal throatserving as a nest-like receptacle, an inwardly directed conduitconnected to the most inward narrowest portion of said throat, aremovable core having a frustro pyramidal outer shell closely fittinginto and clamped against the interior of said receptacle, said corehaving a plurality of outer inclined louver plates and closely spacedrows of obliquely and oppositely directed inclined vanes inside of andextending parallelly to said louver plates, and slot and fin connectionsbetween the outer shell and throat at one side thereof and a rotatablebayonet connection at the other side thereof.

References Cited in the file of this patent

